peters



UNYTED sTA'rEs yraTENr oFricE.

o. G. GILRoY, or NEW YORK, N. Y.

LOOM FOR WEAVING FIGURED FABRICS. i

Specification ofi Letters Patent No.r 3,047, dated .April 15, 1843.

Vplan offloom; Fig. 6, vertical section of parts enlarged; Fig. V7, planof shifting cams; Fig. 8, perspective of shifting cams;

Fig. 9, perspective of stop motion.

The frame of my loom is .constructed like those in common use; thejacquard A being placed above, upon it. On the cylinder of the jacquardthere is a grooved pulley (b2), over which an endless cord (b3) passes,down to a similar pulley (b4) below it; this pulley may be suspended onthe end of a horizontal lever (b5) Ywhich has its fulcrum attached tothe frame, as shown in Fig. l, or the pulley may be attached to a slidewhich moves up and down in guides fastened to the frame; the cord is forturning the jac- -quard cylinder when the wrong card is presented,without climbing up to the machine for that purpose, or hooks takinghold of the pins in the jacquard cylinder maybe substituted having ahandle project down so as to be reached by the hand as shown in Fig.

Vl0, which I deem only a modication of the plan above described.. Theinflexible/connecting rod of the jacquard descends below the crank shaft(a), and its lower end is connected with the forward end of a horizontallever (Z2) that extends back, and is jointed to the back part of theframe of the loom; there is a stud projecting from this lever, behindthe point of its junction with'the vertical lever, on which is afriction 'roller (b), that plays in a groove, on the face of a wheel(f3), more particularly described hereafter.

The driving, or crank shaft, is furnished with a fast and loose pulley((Z) in the usual way; its cranks, by which the lathe is worked, areinside the frame, and lon the end opposite thek pulleys there are twopinions affixed; the inner one (d2) `is halfv the diameter of a spurwheel (6"), on the second or cam-shaft (e) the outer one (cl3) is onevninth the diameter of the wheel (f) into which it works; this wheelbeing on the third, or jacquard shaft (f) which is placed forward of thecam-shaft (e), and on a level Y with it; the third shaft does not extendfrom side to side of the loom, but terminates a little beyond a brace(g) vwhich extends from front to back of the loom-frame, nearV i thecenter; and which supports one of th journals of the jacquard shaft.

On the cam shaft (c), areV two double cams (e2) more clearlyshown inFigs. 6,V

7 and 8, which have a lateral motion, as hereafter described; the twoarms of each of the'cams (e2) project radially from opposite sides ofthe shaft, andare so placed with reference to each other, that when oneis acting on the treadle (h.) the other revolves without striking it;the hub which joins the two arms, is connected with the shaft by afeather and groove, so that it can slide sidewise, and put either ofthe'arms in contact withthe treadle (h) there are two of these treadleswhich are attached to the common picker staff ('L) in the usual way;these treadles are depressed valternately by the cams, for eight shotsof the shuttle; the cams are then made to slide sidewise, and miss oneOn the jacquard shaft (which revolves 'onceV for every nine beats ofthe' lathe) there are two ywheels (f2) aflixed oppositeto the doublecams (e2) Vwhich wheels have two parallelV I grooves 1n their peripherynear each edge, around eight ninths of their clrcumference;

from which pointV are oblique grooves1crossing over to the othersidefand forming an X atV their junction; theseV grooves guide the endsof two leversV (e3) which project back-` ward over the cams (e2) to theback of the vloomeframe where they' areattached; the

forward end, whichr is in the groove, has a follower, yor oval button(et) on it, which is made to turn and follow the groove asrequired;around the hubs ofthe cams (e2) under .the levers (e3) a grooveis turned; into which a pin from the lever projects; the apparatus soarranged, will perform the .will be shifted, andthen the other,rthe

Voperation required; One of the wheels (f2) change takes place justbefore the acting arm would strike the treadle, which brings the otherarm on the same cam in'contact with the treadle, at the neXtsemi-revolution; and thus prevents the loom from losing more than onepick, for every change of the pattern of the jacquard.

The jacquard shaft also carries a wheel (f3) on'its inner end, in theface of which a concentric groove (f4) is cut, eight ninths of itscircumference; the other ninth, the groove curves outward, so as to forma cam, which will act on the connecting rod of the jacquard, as abovedescribed; and, while the shuttle misses one shot, the pattern has timeto change, when the loom is in the most rapid motion.

The front harness mounting, (so called, in contradistinction to thejacquard or back harness mounting) consists, in the drawings of eightleaves; which are intended for an eight leaved twill or satin ground;the leaves (z'), of this mounting, are connected above, with double topor lifting coupers (77) the outer ends of which are connected by ashackle; the opposite end of each of the long coupers, is connected witha counterbalance lever' of the first order, which has a weight attachedto it, for counterpoising the harness; the shackles on the coupers abovenamed, are connected with a set of lifting marches (it) near the bottomof the frame, by rods @5); these marches are parallel with the jacquardshaft, and have their fulcrums near theV center, at (ZG), between thesemarches there is another set (i7) called sinking marches, the fulcrumsof which are at the side of the frame, the opposite ends being connectedwith Vthe leaves of the harness below. Over the center of the liftingand sinking marches a cylinder is placed; the journals of which are on alevel with, and at right angles to the jacquard shaft (f), they aregeared together by bevel wheels (/c), and make the same grooves; andserve for axes for small rollers (702), which are just half thethicknessof the grooves above named, and have a hub projecting from oneside to ll the groove, andkeep them in place, two rollers thusconstructed are placed beside each other in the two first grooves and awire is passed through them, their hubs being toward each other;consequently, when the cylinderV is turned so that these rollers come inContact with the projections on the marches directly Y under thecylinder; one depresses the first raising march in the series, theothertthe Vsecondsinking march; if the hubs ofthe rollers were placedthe other way the first Sinking, and second raisingrmarch, would i beacted on, the iirst raising, and rst sinkingY march being placed underthe irst roller,

and so on; the neXtwire has the Atwo rollers in the sixth and seventhgroove; the others are placed in proper order for an eight leafv satin;and need no further illustration ;the

rollers can be turned on either side,rso` as to 'Y act on either of themarches under itat twills. Y A

I wish to have it understood that although in the foregoingdescription'anddrawings, eight leaves of harness, and eight shots ofweft are mentioned, my'machine is not cont Y. 8O pleasure, so as to form'different kinds of i fined to that number; the jacquard Vshaft Y mayturn once' to eleven beatsrof the lathe, Y Y

or once to ve, &c., whichV will give ten, or four shots of weft to thecard, and '.ten, or

four leaves will be used in the front mount-V ing, as the case mayrequire.

The warp roller (Z) is surrounded Vat its ends by friction straps (Z)each of these de- -V i tached, .that connects it with an upright le-Vver (ZG) this lever is made with a slot in its lower end, to regulatethe distance from the iooA 1 fulcrum of the lever, at which the connect#Y ing rod (Z5) isat-tached; this fulcrum is about one-third its lengthfrom the top; the upper ends of the levers (Z6) support the journals ofa small roller (ZT), which bears against the warp on the roller (Z).When the weaving commences,A and this roller is full, the roller (ZT) isvery far from its cen# ter, and the weight (ZG) is near the end of;

the lever (Z2) as the size of the warp roller decreases, the' roller(Z7) approachesnearer 1 the center of it, and the weight is moveduptoward the friction strap (Z) thus gradually decreasing the friction on.the warp roller, and regulating the tension nf the warp if theextremity of the 'lever (Z4) is a little elevated, the jar of the loomVwill cause 'itto slip back, otherwise a spring maybe madeY for Vdrawingit back.

the weft thread on the shuttlebobbinbecomes exhausted, is as follows:There is a series of cords (n), attached to weights ('a),

and passing over pulleys (n2), through a improvement in the motion tostop y the loom when the thread breaks, or when a front and back harness(n3), under the cum- Y ber board, the harness being worked bywthe- YVcam shaft; all, as described in av patent granted to me, in the name ofJeremiah Wilbur, of New York, on the 12th day of March, 1842, whichpatent is antedated to correspond with one of my English patents, issuedto Moses Pool, of the Patent Office, London, dated Nov. 12, 1839. Thecords (n) after passing over the shutter-race, instead of being all tiedto one iron on the breastbeam, as in that patent; are (as shown in Fig.9,) half of them, or those passing through the mails in the back harness(n3), are affixed to an iron (n4) that projects up in front of thebreast beam; this iron extends down to the bottom edge of the breastbeam to which it is attached, and then turns at rightangles under it at(a5) reaching backward, out beyond the front upright B of the frame, theend terminating in a vertical piece (ne) that is a little shorter thanthe part (71,4) rst named. To the top of this, the ends of the cordsthat go through the front mails of the harnessy (n3) are attached. Onthe side of the front upright B, there is a piece of iron (o) screwed,that extends inward to the iron just described, which is attached to thebreast beam; on the back side of the iron (o) next the lathe, a pinprojects, forming a fulcrum for a lever (0); this lever curves up fromthe fulcrum slightly, and then projects under the upper cords (n) whichare attached to the front end of the iron (n4) the other side of thefulcrum the lever (0) extends out beyond the upright B, and curves down,its end bearing a knob; the spring shipper (p) and its catch (p) Vareattached to the upright B,`and are of the usual construction; on thehandle is a proj ecting piece (p2), that reaches back beyond theupright-the drawing, Fig. 9, shows the shipper spring ofi the catch (p),and consequently, the loom stop D, when it is to be put in motion theshipper is pushed up toward the upright, and is conined by the catch (p)the shuttle at each shot, passes between the upper and under cords (n),and when it enters the box, it leaves the weft thread across them; thelower cords are then raised, and the upper ones are depressed; till theymeet, and are prevented from going other, and the upper ones are broughtdown low enough to depress the end of the lever (0) which is under them;this elevates the knob on the other end, and brings it between the latheand the projection (p2) on` the shipper, and throws it olf, thus causingthe loom to stop. This apparatus I have found much more certain in itsoperation than the modification heretofore patented by me.

The above described parts can be used with a cylinder loom instead of ajacquard by simply substituting the one for the other.

What I claim as my invention, and desire to secure by LettersPatent,`is-

1. The combination of the jacquard or third shaft, with the crank shaftand cam shaft; the jacquard shaft, and cam shaft being driven byseparate pinions on the crank shaft; in the manner and for the purposeherein specified.

2. I claim the combination of the double Sliding cams (c2), one to eachtreadle; which cams slide independently of each other; and incombination therewith, the two double grooved wheels (f2) on thejacquard shaft, constructed and arranged substantially in the manner andfor the purpose herein set forth.

3. I claim the combination of the cylinder with the cam wheel workingthe jac- Y quard, for acting von the marches of the front harness in themanner above specified.V

t. I claim the apparatus for decreasing the tension of the frictionstrap on the warp roller as the warp unwinds, that is to say, thecombination of roller (Z7) levers (ZG) and connecting rods (Z5) with theweight, in the manner described.

5. I claim the improvement in the stop motion as above specified, viz:the combination of the iron (11,4, N5, 116,) on the breast beam, thecords (n) and lever (0f); constructed and arrangedas herein made known.

' C. Gr. GILROY.

Witnesses: Y

JAMES SUMMnRs, J. J. GREENOUGH.

